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Current Theme: Learning & Service
Water: Colorado's Precious Resource

 Water: Colorado's Precious Resource
Activity 1.1 

Teacher Tips 


Level 1
30-50 minutes


This activity will introduce students to the concept of watershed. It will also help them discover how much water is on the planet and how much of it we can actually use. 


  • Blowup Earth Ball 
  • Measuring tools (1000 ml beaker and smaller containers) 
  • Video The Power of Water 
  • Copy of student worksheet All the Water in the World 

Activity #1 

Demonstration with blow-up earth ball 

  • Have students stand in a circle. Tell them to toss the globe back and forth to each other spinning it when they throw it. Each time they catch it, have them tell where their right index finger lands. Theteacher, or a student, should record where each student's finger falls when they catch the earth ball on ocean, land, lake. When everyone has caught the ball once, figure out the percentage of time people's fingers landed on water vs. land. Is it close to 80%? 

Demonstration with milliliter beakers 

  • The earth is 80% water, but not all of that water is fresh or accessible. This demonstration will help students visually understandwhat percentage of water is in the oceans, icecaps and glaciers, groundwater, fresh water lakes, inland seas and salt lakes, the atmosphere, and all rivers. After this activity they will understand that the amount of fresh water available for use is only a faction of the water on the planet. See accompanying student worksheet, All the Water in the World.  (Use your back key to return).

Activity #2 


The National Geographic video The Power of Water is an excellent introduction to water issues, available from the Water Resource Educator. Length is 55 minutes. The video is divided into 5 sections: Columbia River (10 minutes), The Great Lakes (10 minutes), Everglades (10 minutes), Ogalalla Aquifer (10 minutes) and the Colorado River and the Southwest (10minutes). See accompanying video worksheet. (Use your back key to return).

People to Contact 

City of Boulder Water Resource Educator 413-7365 


National Geographic Video The Power of Water 
National Geographic Magazine

  • Nov 93 Water Issue 
  • Mar 93 Ogallala Aquifer 
  • Apr 94 Everglades 
  • Feb 96 Stormwater Runoff 

Project Wild Aquatic How Wet is our Planet pp. 8-10 

Science Standards 

#4.3 Students know major sources of water, its uses and importance, and its cyclic patterns of movement through the environment. 

#5 Students know ways that science, technology, and human activity have an impact on the world and its resources. 

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Last Page Update - Tuesday December 27, 2005